The Mazda R100, produced between 1968 and 1973, is a distinctive compact sports coupe renowned for its pioneering use of the Wankel rotary engine. This model, internally coded M10A, offered a unique performance characteristic and sporty styling that set it apart in the Japanese automotive landscape of its time. Built with early expertise in rotary technology, the R100 represents a significant step in the brand's history, appealing to enthusiasts and collectors who appreciate its innovative powertrain and classic design. Its limited production volume further enhances its status as a collectible and technologically significant vehicle. This comprehensive factory service manual provides full repair and maintenance coverage for the Mazda R100. It details the intricacies of the rotary engine, including overhaul procedures, diagnosis, and specific systems like fuel, ignition, lubrication, and cooling. The manual also covers the manual transmission, drivetrain, suspension, brakes, and electrical systems, offering detailed troubleshooting guides and technical specifications. Essential for owners and technicians, this resource facilitates the proper maintenance, repair, and restoration of this rare classic, ensuring its longevity and optimal performance. 🏷️ Basic Information Identification Make: Mazda Model: R100 Body Style: Coupe Production Years Covered: 1968-1973 Codes Internal Model Code: M10A 👋 Introduction Market Position Segment: Compact Sports Coupe / Personal Luxury Car Target Audience: Enthusiasts, collectors, and owners of classic Mazda R100 models Competitive Analysis Key Competitors Era: Toyota Corolla Levin, Datsun 240Z, Ford Capri, smaller European coupes Key Features Rotary Engine: Pioneering use of the Wankel rotary engine in a compact Japanese car, offering unique performance characteristics. Styling: Sporty, distinctive coupe styling, a departure from more utilitarian Japanese vehicles of the era. Manual Value: Essential resource for maintaining and restoring a rare and technologically significant classic. 📋 Manual Details Coverage Areas Comprehensive Coverage: Full factory service and repair Page Count Estimated Page Count: High (typically 500+ pages for comprehensive factory manuals of this era) Manual Type Manual Type: Factory Service Manual / Workshop Manual Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine System: Rotary engine (10A) overhaul, diagnosis, fuel, ignition, lubrication, cooling Transmission System: Manual transmission (4-speed) overhaul, maintenance, diagnosis Drivetrain System: Rear axle, driveshaft, CV joints Suspension System: Front and rear suspension, steering, alignment specifications Brake System: Hydraulic system, calipers, drums, master cylinder, troubleshooting Electrical System: Wiring diagrams, lighting, charging system, ignition, starter, accessories Body And Chassis: Body construction, doors, windows, interior trim, seat adjustments Fuel System: Carburetor (Hitachi) specifications, adjustment, overhaul Cooling System: Radiator, water pump, thermostat, coolant specifications Lubrication System: Oil pump, oil filter, oil specifications Procedures Included Engine Overhaul: Complete step-by-step engine rebuilding procedures Transmission Repair: Detailed transmission disassembly and reassembly Brake Service: Brake pad/shoe replacement, bleeding procedures, component replacement Tune Up Procedures: Ignition timing, carburetor adjustments, spark plug replacement Troubleshooting: Diagnostic charts and symptom-based problem resolution Electrical Diagnostics: Component testing, wiring harness repair Suspension Alignment: Alignment angles and procedures Technical Depth Depth: Comprehensive: Covers routine maintenance to complete engine and transmission rebuilds, with detailed diagnostic information. 📊 Manual Specifications File Format File Quality: High-resolution scans, suitable for printing Searchability: Likely text-searchable if converted from original digital format or OCR'd Print Quality Print Recommendation: Printable, allowing for easy use in a workshop environment Binding Type Binding Recommendation: Best printed and spiral-bound for durability and lay-flat usability Paper Type Paper Recommendation: Durable paper stock recommended for workshop use ⚙️ Engine Specifications Primary Engine Engine Code: Mazda 10A Engine Type: Two-rotor Wankel Rotary Displacement: 982 cc (actual working volume) Rotor Housing Design: Epitrochoid Performance Horsepower Approx: 100-110 hp (net, depending on variant) Torque Approx: 130-135 Nm (net, depending on variant) Redline Approx: 6500-7000 RPM Fuel System Carburetor: Hitachi DC360 twin-choke downdraft carburetor (or similar Hitachi variant) Fuel Type: Unleaded gasoline (premium recommended for optimal performance) Ignition System Ignition Type: Distributorless Ignition System (DIS) or Distributor-based ignition with dual coils Lubrication System Oil Type: API SE or SF classification, SAE 10W-30 or 10W-40 recommended (check manual for specific fill) Oil Capacity: Approx. 4.5-5.0 liters (including filter) Cooling System Coolant Type: Ethylene glycol based antifreeze (50/50 mix with distilled water) 🔧 Transmission Standard Transmission Type: 4-speed Manual Transmission Optional Automatic Transmission: Available (e.g., Toyo Kogyo 3-speed automatic, refer to specific model variants) Features Clutch Type: Dry, single-plate, diaphragm spring clutch Transmission Fluid: GL-4, SAE 75W-90 or 80W-90 gear oil (check manual for exact specification) 📐 Dimensions Exterior Length: Approx. 4,000 mm (157.5 in) Width: Approx. 1,575 mm (62.0 in) Height: Approx. 1,305 mm (51.4 in) Wheelbase: Approx. 2,285 mm (90.0 in) Weights Curb Weight: Approx. 970 kg (2,138 lbs) Gross Vehicle Weight Rating: Approx. 1,300 kg (2,866 lbs) 🛡️ Safety Features Ratings Crash Test Data: No formal crash test ratings available for this era by modern standards. Active Features Brakes: Front disc brakes, Rear drum brakes Parking Brake: Mechanical, rear drum Passive Features Seat Belts: Standard front seat belts (lap...